Code result
U0017
Medium Speed CAN Communication Bus (+) Open
Moderate severity
What it means
The CAN-High wire of the medium-speed bus is open. Body and comfort modules drop offline; the cluster typically displays multiple comfort warnings simultaneously.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
CAN-High wire broken in body harness
highOne of the most commonly reported causes for this code — check this first.
Gateway module routing CAN messages incorrectly
lowLess common, but worth ruling out after the more likely causes.
CAN terminating resistor (120 Ω) drifted out of spec
lowLess common, but worth ruling out after the more likely causes.
Related help
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